Unpopular British Army postings in the 1920s

What were the most unpleasant British Army postings in the 1920s?

The suggested difficult postings include the North-West Frontier, Sudan and parts of the Middle East, with Aden described as a punishment station.

The North-West Frontier remained an unwelcome deployment in the assessment offered here. Sudan and parts of the Middle East are also identified as difficult assignments. In the Middle East, service under Royal Air Force command added another source of dissatisfaction among soldiers. Aden had the reputation of a punishment station. No single posting is selected as the worst.